summaryrefslogtreecommitdiffstats
path: root/ipc/chromium/src/base/message_pump_default.cc
diff options
context:
space:
mode:
Diffstat (limited to 'ipc/chromium/src/base/message_pump_default.cc')
-rw-r--r--ipc/chromium/src/base/message_pump_default.cc105
1 files changed, 105 insertions, 0 deletions
diff --git a/ipc/chromium/src/base/message_pump_default.cc b/ipc/chromium/src/base/message_pump_default.cc
new file mode 100644
index 000000000..ef37b6296
--- /dev/null
+++ b/ipc/chromium/src/base/message_pump_default.cc
@@ -0,0 +1,105 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/message_pump_default.h"
+
+#include "base/logging.h"
+#include "base/message_loop.h"
+#include "base/scoped_nsautorelease_pool.h"
+#include "GeckoProfiler.h"
+
+#include "mozilla/BackgroundHangMonitor.h"
+
+namespace base {
+
+MessagePumpDefault::MessagePumpDefault()
+ : keep_running_(true),
+ event_(false, false) {
+}
+
+void MessagePumpDefault::Run(Delegate* delegate) {
+ DCHECK(keep_running_) << "Quit must have been called outside of Run!";
+
+ const MessageLoop* const loop = MessageLoop::current();
+ mozilla::BackgroundHangMonitor hangMonitor(
+ loop->thread_name().c_str(),
+ loop->transient_hang_timeout(),
+ loop->permanent_hang_timeout());
+
+ for (;;) {
+ ScopedNSAutoreleasePool autorelease_pool;
+
+ hangMonitor.NotifyActivity();
+ bool did_work = delegate->DoWork();
+ if (!keep_running_)
+ break;
+
+ hangMonitor.NotifyActivity();
+ did_work |= delegate->DoDelayedWork(&delayed_work_time_);
+ if (!keep_running_)
+ break;
+
+ if (did_work)
+ continue;
+
+ hangMonitor.NotifyActivity();
+ did_work = delegate->DoIdleWork();
+ if (!keep_running_)
+ break;
+
+ if (did_work)
+ continue;
+
+ if (delayed_work_time_.is_null()) {
+ hangMonitor.NotifyWait();
+ PROFILER_LABEL("MessagePump", "Wait",
+ js::ProfileEntry::Category::OTHER);
+ {
+ GeckoProfilerSleepRAII profiler_sleep;
+ event_.Wait();
+ }
+ } else {
+ TimeDelta delay = delayed_work_time_ - TimeTicks::Now();
+ if (delay > TimeDelta()) {
+ hangMonitor.NotifyWait();
+ PROFILER_LABEL("MessagePump", "Wait",
+ js::ProfileEntry::Category::OTHER);
+ {
+ GeckoProfilerSleepRAII profiler_sleep;
+ event_.TimedWait(delay);
+ }
+ } else {
+ // It looks like delayed_work_time_ indicates a time in the past, so we
+ // need to call DoDelayedWork now.
+ delayed_work_time_ = TimeTicks();
+ }
+ }
+ // Since event_ is auto-reset, we don't need to do anything special here
+ // other than service each delegate method.
+ }
+
+ keep_running_ = true;
+}
+
+void MessagePumpDefault::Quit() {
+ keep_running_ = false;
+}
+
+void MessagePumpDefault::ScheduleWork() {
+ // Since this can be called on any thread, we need to ensure that our Run
+ // loop wakes up.
+ event_.Signal();
+}
+
+void MessagePumpDefault::ScheduleDelayedWork(
+ const TimeTicks& delayed_work_time) {
+ // We know that we can't be blocked on Wait right now since this method can
+ // only be called on the same thread as Run, so we only need to update our
+ // record of how long to sleep when we do sleep.
+ delayed_work_time_ = delayed_work_time;
+}
+
+} // namespace base